My maven Java project in Eclipse doesn't generate jar file

问题

If I use command line command like "mvn compile" and "mvn install", I see a jar file under target directory.

But if I build the same project from Eclipse using m2e plugin, I don't see a jar file but only compiled class directories under target directory but they are empty. Any insight on this problem?

回答1:

m2e won't build a jar unless you ask it to. (An exception to that is when you're using it with certain connectors to develop OSGi bundles, but I assume you aren't.)

To build a jar:

• Right-click on the project folder in the 'Package Explorer' view;
• Select "Run As"
• Select "Maven install"

来源：https://stackoverflow.com/questions/12993504/my-maven-java-project-in-eclipse-doesnt-generate-jar-file